It is used for positioning the screw beam and the cover hole of the steel beam so as to cover the steel beam with a stainless steel thin plate cover.

From Japan

On 2017-01-30 17:06:16

Even if you measure the dimensions, you can use the dowel because there is a possibility that the position may be slightly shifted. It was optimal for this work because the collar of the dowel is thin and the protrusion of the pin is also small.